Related Experiment Video
Updated: Jul 18, 2026

A Simple Protocol for Extracting Hemocytes from Wild Caterpillars
Published on: November 15, 2012
An access-oriented negotiated fee schedule. The Caterpillar experience
Abstract:
This paper describes the system used by Caterpillar Corporation (CAT) in Peoria, Illinois, to reimburse surgeons. The CAT system assures access for Caterpillar employees and their families to a selection of qualified surgeons, while achieving cost savings through improvements in processing of surgical claims and negotiation of selected fees. CPT-4 codes are recorded for greater accuracy, when indicated, surgical services that have been incorrectly unbundled are rebundled, and the appropriateness of surgical assistant charges is reviewed. A "degree of difficulty" relative value scale (DODRVS) of surgical services is periodically revised as technology changes. The DODRVS multiplied by a regional factor, determined by local market research, establishes the fee that CAT will pay the surgeon. Balance billing is permitted if the patient (1) is informed in advance by the surgeon that the fee will be higher than CAT will pay, and (2) knows that the service can be obtained from other local surgeons who will accept the CAT fee. The goal of the CAT method of surgeon reimbursement is to gain physician support for an access-oriented, market-driven negotiated fee schedule. Compared with a resource-based relative value scale RBRVS) methodology, the CAT system is not formula-driven and depends on physician acceptance.
Related Concept Videos
Facilitated Transport
Rate-Determining Steps
In a multistep reaction mechanism, one of the elementary steps progresses significantly slower than the others. This slowest step is called the rate-limiting step (or rate-determining step). A reaction cannot proceed faster than its slowest step, and hence, the rate-determining step limits the overall reaction rate.
The concept of rate-determining step can be understood from the analogy of a 4-lane freeway with a short-stretch of traffic-bottleneck caused due to...
Facilitated Transport
Catenins
Catenins in Cell Junctions
Catenins bind to cell adhesion molecules such as cadherins and link them to different cytoskeletal proteins depending on the type of cell junction. At the adherens...
Otto and Diesel Cycle
Linear Equations

